Question

Explain the working of a manual hand pump?

Answer 1

Water Hand Pump: Parts, Types &Working Principle. In the most simple terms, a water hand pump is a mechanical device or a pump which uses manual human power to lift water from a well. ... The essential component of hand pumps are Handle, The pump rod, Piston, Piston Valve, Raising main, suction lift and the water outlet.

Answer 2

Hand pumps are manually operated
pumps ; they use human power and mechanical advantage to move fluids or air from one place to another. They are widely used in every country in the world for a variety of industrial, marine, irrigation and leisure activities. There are many different types of hand pump available, mainly operating on a piston, diaphragm or rotary vane principle with a check valve on the entry and exit ports to the chamber operating in opposing directions. Most hand pumps have plungers or reciprocating pistons, and are positive displacement